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Title: Treatment of pyridine-bearing wastewater by Nano Zero-valent iron supported on activated carbon derived from agricultural waste
Authors: Gosu V.
Gurjar, Bhola Ram
Surampalli R.Y.
Zhang T.C.
Published in: Desalination and Water Treatment
Abstract: Nano zero-valent iron particles (nZVI) supported on granular activated carbon (GAC) (nZVI/GAC) were synthesized and its feasibility was explored for the treatment of pyridine-bearing wastewater. nZVI/GAC was synthesized by the borohydride reduction method under ethanol atmosphere. The synthesized nZVI/GAC was characterized by scanning electron microscopy (SEM), X-ray diffraction, Fourier transform infrared spectroscopy, and N2 adsorption–desorption study. Results indicated that the nZVI was well dispersed on the surface of GAC. The presence of support material apparently decreased the extent of aggregation and size of the nZVI and thus, facilitated in increasing the pyridine removal efficiency. Batch studies were carried out in order to evaluate the effect of operating parameters such as pH (2 ? pH ? 9), dose (m) (5 ? m ? 15 g/l), initial concentration (Co) (50 ? Co? 1000 mg/l), and temperature (T) (288 ? T ? 318 K). At optimum condition, maximum removal of pyridine was found to be ~86% at m = 15 g/l, pH = 6, Co= 100 mg/l, and T = 303 K. The degradation kinetics has been investigated, and pseudo-first-order kinetic model was found to be suitable fit for the experimental data kinetic model. The apparent activation energy (Ea) of this process was found to be ~22.46 (kJ/mol). The nZVI/GAC showed stable performance for the degradation of pyridine-bearing wastewater until five consecutive cycles. © 2015 Balaban Desalination Publications. All rights reserved.
Citation: Desalination and Water Treatment(2016), 57(14): 6250-6260
Issue Date: 2016
Publisher: Taylor and Francis Inc.
Keywords: Granular activated carbon
Kinetic study
Nano zero-valent iron
ISSN: 19443994
Author Scopus IDs: 57208384095
Author Affiliations: Gosu, V., Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Gurjar, B.R., Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Funding Details: Authors are thankful to the Ministry of Human Resource and Development (MHRD), Government of India, for providing financial support to undertake this research work. Authors also thank the reviewers whose comments and suggestions have helped to significant
Corresponding Author: Gurjar, B.R.; Department of Civil Engineering, Indian Institute of Technology RoorkeeIndia; email:
Appears in Collections:Journal Publications [CE]

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